不同牌号溴化丁基橡胶的结构与性能对比  

Comparison of structure and properties of bromobutyl rubbers with different brands

作　　者：熊晓刚[1] 房尔园[1] 王经逸[1] 许金楼[1] 陈杰[1] 贾红兵[1] 

机构地区：[1]南京理工大学教育部软化学和功能材料重点实验室,南京210094

出　　处：《合成橡胶工业》2013年第3期189-193,共5页China Synthetic Rubber Industry

基　　金：国家自然科学基金资助项目(50972059)

摘　　要：分析了5种牌号溴化丁基橡胶(BIIR)(2255、2222、2211、2030、BIIR-C)的溴含量,并研究了5种BIIR生胶的门尼黏度和热稳定性及硫化胶的物理机械性能和热稳定性。结果表明,BIIR生胶溴含量从大到小的顺序依次为2255,2222,2211,BIIR-C,2030,门尼黏度从大到小的顺序依次为2255,2222,2211,2030,BIIR-C;生胶热稳定性以及热分解活化能从大到小的顺序依次为2255,2211,BIIR-C,2222,2030;在5种BIIR生胶中,2255具有最大的硫化速率,且其硫化胶具有最优的拉伸强度、扯断伸长率及撕裂强度,2030和BIIR-C硫化胶的撕裂强度较低,且2030的热稳定性最差。Bromine content of bromobutyl rubbers （BIIR） with different brands （2255, 2222, 2211, 2030, BIIR-C） were analyzed,Mooney viscosity and thermal stability of BIIR gums as well as the mechanical properties and thermal stabili-ty of BIIR vulcanizates with different brands were studied. The results showed that the order of bromine content from high to low was 2255, 2222, 2211, BIIR-C, 2030, Mooney viscosity 2255,2222, 2211, 2030, BIIR-C, and thermal sta-bility and apparent activation energy of BIIR gums 2255,2211, BIIR-C, 2222, 2030. Among the five BIIR gums, 2255 had the largest vulcanization rate, and its vulcanizate possessed the best tensile strength, elongation at break and tear strength, and 2030 and BIIR-C vulcanizates revealed poor tear strength, 2030 had the lowest thermal stability.

关 键 词：溴化丁基橡胶 溴含量 门尼黏度 硫化特性 物理机械性能 热稳定性 

分 类 号：TQ333.6[化学工程—橡胶工业]